high-stakes chase under way for the fugitive edward snowden who leaked so many of the nation's top secrets. Where is he hiding tonight? Abc's chief investigative correspondent brian ross has the latest on the global manhunt. Reporter: He's somewhere in the moscow airport with the u.S. Outraged. It would be very sding if he was allowed to board an airplane as a as a result and there would be without any questions, an impact on the relationship and consequences. Reporter: Snowden had been scheduled to fly to havana today on aeroflot, but his assigned seat in economy class was empty, as the plane pulled away from the gate. Even though he had checked in. Snowden is trying to make his way from russia, to cuba and then ecuador for political asylum. Ecuador's embassy in london ALREADY SERVEs AS A SAFE HAVEN For another u.S. Target, wikileaks founder julian assange who said his group helped range snowden's escape. Snowden was able to flee his hide-out in hong kong after a final dinner of pizza and fried chicken because of help from officials there who delayed acting on the u.S. Request for his arrest, claiming the paperwork was not in order. And then failed to tell american officials that snowden was on the move. No problem at the airport? No problem in the airport. Reporter: Snowden's lawyer told gloria riviera, a government intermediary advised him to leave immediately. Then he would be given free passage, unintrupted passage to any other place of his choice. Reporter: Snowden was able to fly out of hong kong for moscow on sunday even though his passport had been revoked by the u.S. At day before. Hong kong officials now say the passport was not revoked in time by washington. Coming eight days after the criminal charges were first transmitted. They're saying it's washington's fault, not theirs. Thank you so much, brian.

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